SKU: MGPMDRM-AP
The ProMag Sig MPX 9mm drum magazine in black polymer is a high-capacity feeding solution purpose-built for the Sig Sauer MPX platform, holding 50 rounds of 9mm ammunition total. This drum magazine is ideal for tactical training, qualification courses, and operational scenarios where extended magazine capacity reduces reload frequency and maintains rate of fire during extended engagements.
The black polymer construction provides a lightweight alternative to steel while ensuring compatibility with the MPX's magazine well. Drum magazines function through spring-tensioned feed springs and follower plates that advance ammunition toward the feedway as rounds are chambered. ProMag has engineered this drum to handle the 9mm cartridge's ballistic profile without overstressing component tolerances, ensuring reliable cycling across standard pressure factory and +P loading.
Operators and shooters running the MPX platform for duty carry, subject matter expert (SME) training, force-on-force scenarios, or competitive matches benefit from the capacity boost during string-fire exercises. The drum profile is specifically designed for the MPX platform and does not require platform-specific holster modifications. Users should perform function tests with their specific ammunition types before duty deployment to ensure reliability.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
